Switch.



Patented Nov. 27, 1917.

4 suzz s smin m M z m 21 a/ mgzaM/zw ATTOR Elf WITNESSES:

I. A. VAN ALSTYNE.

, swncn. APPLICATION FILED MAY 5, I917- 47,751. I Patented Nov. 27, 1917.

4 SHEETSSHEET 2.

WITNESSES. N 'INI/ENTOR 61. 0% I I B .MMMJJA. 2 pgwjfwmy TTOfiI/EY I. A. VAN ALSTYNE.

SWITCH.

APPLICATION FILED MAY 5. 191

Patented Nov. 27 1917 4 $HEETSSHEET 3.

I I I M I I I? I I I I I 1 I V- I )q @I I I "I NI w ,WITIVESSES: Y INVENTOR J. A. VAN ALSTYNE SWITCH.

APPLICATION FILED MAY 5. 1917.

1,247,751. 4 Patented N0v.27, 391?.

Y T76 I 4 SHETSSHEET 4.

r W/T/VESSES: IN VE/VTOI? ATTOR Y UNITED STATES Parana tZWTniQE.

JOHN ASTOR VAN ALSTYNE, OF SACRAMENTO, CALIFORNIA, ASSIGNOE 631 UNZE-HA'LF TO CASPER VINCENT SCHNEIDER, OF SACRAMENTO, CALIZFGHN' A.

SWITCH.

Specification of Letters Patent.

Patented Nov, 2'7, 1917;

Application filed May 5, 1917. Serial N 0. 166,772.

To all whom it may concern:

Be it known that 1, JOHN ASTOR VAN adapted to a three phase circuit is also adapted to any other phase circuit.

One of the objects of this invention is to provide a switch in which the current, supplied to a motor for instance, shall not pass through the safety, fuses until the motor shall haveattained its full speed, and to make possible also the use of safety fuses having an amperage more nearly corresponding to the protection desired. Under the present method of passing all the current through the fuses on starting a motor, it is necessary to provide heavier fuses so that they will not blow out but which consequently do not give the desired protection to the motor after it is running.

Another object is to provide an inclosed switch which shall automatically be thrown to open positionwhen the cover is removed; still another object is to provide means whereby the switch may be locked in open position for protection to workmen making repairs; and further to provide means whereby the switch may be thrown open with the cover inclosed position.

Various other' objects and advantages will be apparent as the description progresses, and while I have illustrated what 1 consider the best embodiment of my invention, I do not wish thereby to limit myself thereto, as various changes within the scope and spirit of this invention may be made with- .out sacrificing any of the numerous advan tages attained thereby. Y

In the drawings, Figure 1 is a front elevation of the switch, the cover being removed; Fig. 2 is a partial side elevation of the switch looking to the right and showing the same in running position; Fig. 3 is the same View showing the switch in open position; Fig. 4 is a side elevation of the inclosing casing, with the switch removed, to more fully illustrate the switch handle and the means for locking the same in open position; Figs. 5 and. 6 are diagrammatic views of my invention showing one form of connections and at the same time indicating a modification of construction.

In the drawings, a suitable insulating base 1 is shown uponwhich are mounted the various devices described. ln'this instance, a jointed douhle connection threepole switch is illustrated comprising blade members 23, 4-5 and Ge-7 which are 7 hinged at their inner'ends and revolubly mounted in standards 8, 9 and 10. The upper ends of the blade members 3, 5 and 7 form contacts with the standards 11, 12 and 13 respectively, and the lower ends of the blade members 2, 4 and 6 form contacts with the standards 14,115 and 16. Insulating bars 241 and2l connect these blade members into two sections. Safety fuses 17, 18 and 19 respectively connect standards 8, 9 and 10 with contacts 14,15 and 16. Springs 20 and 21 are provided mounted on suitable standards and which are connected at their outer ends to the upperblade members 3 and 7 for causing the upper section ofthe switch to be thrown outward on release of a catch to be hereinafter mentioned.-

' Pivotally mounted on the lower blade member 4 is a lever 22 whose upper end -passes loosely through a guide 23 mounted on the insulating bar 24;. For limiting the outward movement of the upper section of the switch, a pin or lug 25 is provided on the lever 22. A fulcrum 26 is mounted on the insulating base 1 and under certain conditions acts to throw the lower section of the switch outwardand away from the contacts 14, 15 and 16.

The contact standards 11, 12 and 13 are provided with means for attaching the main lead wires, while the contact standards 1%, 1'5 and 16 have means for attaching the feed wires to the motor. Mounted on the insulating bar 24 is a notched bolt 27 held in releasable position by a keeper 28, said keeper being slidably mounted in a bracket 29 and controlled by links 00 and the lever 31. Above the lever 31 is mounted a solenoid 32, one terminal being connected to the standard 1.4 and the other to the standard 16. The catching device thus illustrated is covered by Letters Patent issued to me Oct. 10th, 1016, #301,114.

A manually operated U-shaped handle bar 33 is provided pivotally mounted in openings in the sidewalls 3e and 35 forum ing part of the main frame in which the base 1 is secured; the n' iddle portion of the l -shaped part bears against the bolt The outer end. of the handle is provided with a staple which a padlock may be secured, and about midway between this blade members 2, el; and i still rcnuiinin'g in I contact; with the standards 14-, 15 and 16 connected to the motor, as shown by the (lotted llnes in Figs. 3 and The motor Wlll then start, the current passin through the upper and lower blade members but not through the fuses. This describes the first closing movement.

As soon as the motor has attained full speed, a further thrust is given the handle 33 which causes the lower end-of the lever 22 to be raised thus forcing the lower blade members 2, 4; and (3 out and away from their contact standards 14, 15 and 16 as shown in Figs. 2 and 6, and causing the currentto through the fuses.

For the purpose of assisting the outward throw of the lower section of the switch,

springs 37 may be provided; and for limiting the outward throw ofsaid lower section, a pin or lu 25 is provided on the lever 22. If it is desired to open the switch, a button 38 may be pressed causing a crank-lever 39 to move the releasing lever 31 which will cause a disengagement of the keeper 28 from the notched bolt 27. By reason of the springs 20 and 21, the upper section of the hinged switch will be thrown forcibly outward and the lever 22 will cause the lower section to be thrown downward into contact position with the standards 14, 15 and 16, the pin or lug 25 bearing against the guide 23. Should the current be disrupted by reasonof a main switch (other than the switch here described) being opened, or should there be a failure of currentfor any other cause, the armature 40 in the solenoid 32 will drop upon the releasing-lever 31 causing the switch to be opened in the same manner when pressing the button 88. Should the cover 41 of the inclosing casing 42- (Fig. be removed, the switch being closed, a spring 43 will be released by the crankdevor at causing a downward movement of the armature 4:0 agamst'the releasinglevcr permitting the switch to open in the =1 e manner as when pressing the button or when the current is disrupted.

In order to prevent the switch being closed, thus endangering workmen makii g repairs to the electrical equipment, the operating handle bar 33 may be pa-:llocked to the bar through the staple 33' and open ing 46. The bar 45 is also provided with a notch so which of its own weight drops onto the lug 36 and when the handle 33 is handle bar may be further thrust for-' warn, thus completing the second. or final closing movement.

Having thus described my invention, what l claim as new and desire to protect by Letters Patent, is v.

1. In a switch, in combination, one or more switch blades each comprising two members pivotally joined together and pivotally connected at their hinged ends to standards mounted upon an insulating base, contact standards also mounted upon the base, adapted to contact with the free ends of the blade members, and a fuse for each blade connecting the central standard to one of the outer contact standards whereby when both members of a blade are in contact positions, the fuse is shunted, when the blade member on the fused side is open the fuse will be in circuit and when the other blade member is in open position the circuit is open. i

2. In a switch, in combination, one or more switch blades each comprising two members pivotally joined together and pivotally ,con-

nected at their hinged ends to standards mounted upon an insulating base, contact standards also mounted upon the base adapted to contact with the free ends of the blade members, a fuse for each blade connecting the central standard to one of the outer contact standards, and resilient means for rotating the non-fused blade-member about the fused blade member independent of the same.

3. In a knife switch, in combination, a plurality of blades arranged in two sections, each blade being composed of-two members pivotally joined together and pivotally connected. at their'hingcd ends to standards mounted upon an insulating base, contact standards also mounted upon the insulating i standard, and resilient means for rotating the upper blade section about said pivotal points independent of the lower section.

at. In a knife switch, in combination, a

' plurality of blades arranged in two sections,

each blade being composed of two members pivotally joinedtogether andpivotally connected at their hinged ends to standards mounted upon an insulating base; cont-act standards also mounted upon the insulating base adapted to contact with the free ends of the blade members; a fuse foreach blade member of the lower section connecting the central standard with its outer contact standard; a fulcrum mounted upon the base; a lever pivotally connected to one. blade member of the lower section at an intermediate point on said blade; a guide secured to the outer end of theother blade member, said guide having a slot for loosely receiving the outer end of said lever, said lever being adapted to engage the fulcrum at a predetermined point, and'said lever also having near its outer end between the guide and the pivoted end of the lever a pin or lug for limiting the movement of one section upon the other. I

5. In a knife switch, in combination, a; plurality of blades arranged in two sections, each blade being composed of two members pivotally joined together and pivotally connected at their hinged ends to standards mounted upon an insulating base; contact standards also mounted upon the insulating.

base adapted to contact with the free ends of the blade members; a-fuse for each blade member of the lou er section connecting the central standard standard; a fulcrum mounted upon thebase; a lever pivotally member of the lower section at an interwith its outer. contact onnected to one blade,

mediate'point on said blade; a guide secured to the outer end of the other blade member, said guide having a slot for loosely receiv ing the outer end of said lever, said lever being adapted to engage the fulcrum at a predetermined point, and said lever also having near its outer end between the guide and the pivoted end of the lever a pin or lug for limiting the movement of one section upon the other, and resilient means for rotating the upper blade section about said pivotal points independent of the lower section.

6. In a knife switch in combination, a plurality of blades arranged in two sections, each blade being composed of two members pivotally joined together and pivotally connected at their hinged ends to standards mounted upon an insulating base; coi'itact standardsalso mountcdupon the insulating base adapted to contact with the free ends of the blade members; a fuse for each blade member of the lower section connecting the central standard with its outer contact stand and; a fulcrum mounted upon the base, a lever pivotally connected to one blade member of the lower section at an intermediate point on said blade; a guide secured to the outer end of the otherblade member, said guide having a slot for loosely receiving the outer end of said lever, said lever being'adapted to engage the fulcrum at a predetermined point and said level also having near its outer end between the guide and the pivoted end of the lever a pin or lug for limiting the movement of one section upon the other; resilient means for rotating the upper blade section about said pivotal points independent of the lower section; and a latch bolt mounted on the upper bladesection adapted to engage a solenoid-controlled catch mechanism.

JOHN ASTOR VAN ALSTYN E.

Witnesses:

C. V. SCHNEIDER, J. BENJAMIN. 

